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3 years ago

An environmental change causes the

Biology

1 answer:

Feliz [49]3 years ago

5 0

Answer:

The correct option is<u> slight increase in salt concentration in the </u>

<u>environment.</u>

Explanation:

The main function of contractile vacuole in the body of a paramecium is to pump out excess water. But an increase in salt concentration in the environment will let the water move inside the cell by osmosis. Hence, the contractile vacuole will not perform its function and will not be able to regulate osmoregulation.

Other options are incorrect because slight changes in the temperature or pH won't affect the contractile vacuole and it will still be able to perform its function.

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17. Addition of hydroxide ions to a solution will

JulijaS [17]

Answer:

Explanation:

Addition of hydroxide ions will decrease its acidity and make it more basic.

3 0

3 years ago

Which Kingdom is represented by the following description: All are multicellular organisms, reproduce sexually or asexually, can

natta225 [31]

Answer:

Plants

Explanation:

They are multicellular organisms. In plants there are two types of reproduction :- sexual and asexual. Sexual reproduction happens when androecium and gynoecium both fuses and in asexual reproduction when only androecium or gynoecium is present in a plant. Androecium us a male part off flower and gynoecium is the female part of flower. Plants can't move that we all know and they are autotrophs coz they can make their own food in presence of sunlight, water, air and chlorophyll.....

I hope u will understand it :-) :-)

6 0

3 years ago

1. If a cell has a large surface area to volume ratio, it _______

Stells [14]

1. Exchange materials with its environment efficently

3 0

3 years ago

In rabbits, black fur (B) is dominant to white fur (b). A purebred black furred male is bred with a female that had the recessiv

ValentinkaMS [17]

Answer:

All the offsprings will be black-furred (Bb)

Explanation:

This question involves a single gene coding for fur length in rabbits. The allele for black fur (B) is dominant to the allele for white fur (b). This means that a rabbit heterozygous for this gene (Bb) will have a black fur.

According to this question, a purebred black furred male (BB) is bred with a female that had the recessive white fur (bb). The parents will produce gametes as follows:

BB - B only

bb - b only

Using these gametes in a punnet square (see attached image), the genotypic proportion of the produced offsprings is as follows:

Bb, Bb, Bb, Bb

All Bb (heterozygous) means that all of the offsprings will be black-furred.

8 0

3 years ago

All of the following is leading to less habitable land for human populations except…

grandymaker [24]

Answer:

Scarcity of freshwater.

Explanation:

8 0

2 years ago